Improvement in grates for stoves and furnaces



2 Sheets--Sheet 1i.

N. A. BOYNTON.

Grate forStoves and Furnaces.

Patent-ed May 14, 1872.

IN V E N TOR.

WIT" ESSES.

\ 4M4 Pl-mm IIINOGRAPHIC 00. N. X tbssomvss PHOCESS.)

.. 2 Sheets--S'heet 2.

N A.B0YNTON.

Gratefbr Stoves and Furnaces.

N0. 126,777 Patented M'ay14J'f S72.

Fig.4.

Witnesses. *w-zim Inventor.

NATHANIEL A. BOYNTON, OF NEW YORK, N. Y.

IMPROVEMENT IN GRATES FOR STOVES AND FURNACES.

Specification forming part of Letters Patent No. 126,777, dated May 14,1872.

Specification of an Improvement in Furnaces, invented by NATHANIEL A.BOYNTON, of the city, county, and State of New York.

My invention relates primarily to a mode of constructing and applyingthe furnace-grate. which adapts it to be freed from ashes and clinkerswithout shaking. To this end I provide the grate with a rim or flangeprojecting upward from its periphery and extending around its sides andrear part, and locating it below the level of the bed-plate or thebottom of the fire-pot, the upwardly-projecting rim serving to close thespace between the grate and the bed-plate or bottom of the pot, while atfront an opening is left for the insertion of a slicing hook or pokerand the removal of clinkers and other incombnstible matter, while theaccumulated ashes fall through the grate under the slicing or stirringaction. The invention further consists in the employment or use of anautomatic supporting-latch in connection with a slicing-grateconstituted substantially as set forth.

In the drawing, Figure 1 is a plan or top view of a grate and bed-plateillustrating my invention, showing also a fragment of the firepot. Fig.2 is a vertical longitudinal section of the same. Fig. 3 is a verticalsection of parts of the bed-plate and grate, showing in elevation thelatch which supports the front of the latter. Fig. 4. is a perspectiveview of the flanged grate detached.

A represents the fire-pot; B, the bed-plate; and, 0 the base containingthe ashpit, all of which may be of any common or suitable construction.D is my improved grate, having a flange or rim, E, projecting obliquelyupward from its periphery. The grate is pivoted on trunnions F F locatedback of its center, and is supported in front by a gravitating latch, G,which is so constructed that it will automatically catch and retain thegrate when the latter is thrown up into its normal position. Theconstruction of this latch is clearly shown in Fig. 3. It is pivoted atg, and is formed with a horizontal supporting-shoulder, 71, upon whichrests the horizontal flange or lip, (1, projectin g from the front ofthe grate, and with an arm, 2", projecting obliquely downward, affordinga convenient hold for a hook or poker, by which thelatch maybe-withdrawn to allov. the grate to fall for the purpose of dischargingcinders and emptying the fire-pot. At P in Fig. 2 is shown the end of ahook or poker as in the act of withdrawing the latch from the grate, thedotted lines showing the latch retracted and the grate falling. The fulllines show the grate and latch in their normal positions. 7

To clear the grate of ashes, clinkers, and other refuse, a similar flathook may be inserted in a horizontal position above the grate at theopening in front, and, being drawn over the entire upper surface of thegrate, it will remove and discharge any incombustible matter moreefficaciously, and with less labor and violence, than are involved inshaking a grate.

It will be observed that the application of my improved grate does notaiiect the fire-pot or bed-plate, or necessitate any change therein. Thefire-pot and bed-plate remain intact, the grate being placed at a lowerlevel, so as to give access to its upper surface from the front, atwhich part its upwardly-projecting rim or flange is omitted.

Claims.

I claim as my invention-,- 1. A grate formed with an upwardly-projectingflange or rim around-its rear and sides,

substantially as and for the purposes herein set forth.

2. A grate, D, bed-plate B, and fire-pot A, combined and arranged,substantially as herein set forth, with the said grate below the'Witnesses:

JAMES R. WALLS, GEO. W. OoLvER.

